#back_img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
#lottrey_img{
    position: absolute;
    left: 10%;
    top:42.5%;
    width: 80%;
    height: 50%;
}
#button_img{
    position: absolute;
    left: 36.8%;
    width: 26%;
    top: 60%;
    height: 15.5%;
}
